Dear Samyak, Let me try and relook at your situation...
1. You have a job which you got just after completing your MBA in HR.
2. The job is a low-pressure, stable job, and you are not being made to sweat.
3. Your job, as it stands now, gives you enough bandwidth to learn and research on a proactive basis to improve your knowledge.
Hmm... and you were saying about not learning and feeling bored...
Let me ask you this...
1. How many processes that are followed in your organization are you aware of?
2. How many of them do you think need improvement?
3. What are those improvements?
4. What other aspects would you like to change in your organization?
Answers to the above questions would give you an indication of what you have learned and how much thought has gone in. My speculative reaction to your situation is that you have been waiting for someone to come and tell you what to do or give you work. Successful people have never, never been reactive personalities. They have always been proactive. And that's what you need to do. Become proactive, observe, listen, understand, contemplate, and act.
Job change is an absolute no, if you ask me.
Cheers!!!